Cooling system pump for outboard motors



Aug. 18, 1931. c. LA GRANGE COOLING SYSTEM PUMP FOR OUTBOARD MOTORS Filed May 16. 1930 M /6 #1720 as awuwntoz Clarence La gr e h is Patented Aug. 18, 1931 UNITED stares isiasza CLARENCE LA GRANGE, OF HOWARD BEACH, NEW YORK COOLING SYSTEM PlIMIP FOR OUTBOARD 'MOTORS Application filed May 16, 1930.

The invention relates to pumps and has for its object to provide an eflicient pump for circulating water through the cooling system of the engine on so-cailed outboaai motors. Another object is to provide a pump of simple construction, occupying only a small space, with all its parts readily cessible, and which can be manufactured at a comparatively low cost.

These and other objects and advantages will be readily understood from the following description and from the accompanying drawings of a preferred embedin ent in which, however, certain modifications might be made withoutdeparting from the scope of the invention. In the drawings Fig. 1 is a side elevation of certain parts of an-outboard motor, drawn partly in section and showing the pump;

Fig.2 is a front elevation of Fig. 1, on line 2-2 of that view;

Fig.3 is a cross-sectional View taken on line 3-3, Fig. l; and

Fig. at is a cross-sectional view taken on line 4-4, Fig. 1, and drawn to a larger scale than the other views.

Referring now to all the views, the housing of the under-water parts of an outboard motor is indicated by the numeral 10. The propeller shaft 11, to which the propeller 12 is secured, rotates in the housing and is driven in the regular manner by the vertical main shaft 13. The means employed for taken imparting motion from the main shaft to the propeller shaft are not shown as they do not form part'of the invention.

A circular recess 14 is formed in the from the main shaft 13 by a pair of bevel gears 21 and 22.

A paddle wheel, consisting of a hub 23 and a plurality of arms 24 to which paddles Serial No. 452,940.

25 are secured, is mounted on the shaftQll and rotates with this. The water asit enters the recess '14 through the passage 1.5 is. by the action of the paddle wheel, forced upward through an outlet 26. This outlet communicates with a passage 27 cast in the main shaft casing 28 and from this passage the water is suitably piped to the jacket of the engine.

Having described my invention, what I claim as new and wish to protect by Letters Patent is: g

In combination with an outboard motor having a submerged housing and a vertical shaft rotating therein, a circular recess formed in one side of said housing, a cover for said recess, water inlet and outlet pas sages leading to and from said recess, a paddle wheel rotating in said recess on an axis at right angle to that of the vertical shaft in the housing, and means for transferring rotary motion from said vertical shaft to the paddle wheel. I i

' CLARENCE LA GRANGE, 

